The quality, condition, or practice of being a dullard; the state of dullness or stupidity.
From dullard + the suffix '-ism' (a system, practice, or condition). This word formation follows the pattern of -ism suffixes that turn nouns into abstract concepts representing ideologies or states of being.
Dullardism is such a wonderfully harsh word that piles on insults—it's not just being dumb, it's turning stupidity into a whole philosophical system or way of being!
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